Protective cover



FIG. 1 is a perspective view of a design for a protective cover for a portable electronic device;

FIG. 2 is a first end view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a second end view thereof; and,

FIG. 7 is a second side view thereof.

Broken lines are used in the drawings to illustrate features that form no part of the claimed design. 

CLAIM The ornamental design for a protective cover, as shown and described. 